[merged] mm-hugetlbc-just-use-put_page_testzero-instead-of-page_count.patch removed from -mm tree

[merged] mm-hugetlbc-just-use-put_page_testzero-instead-of-page_count.patch removed from -mm tree

[akpm]

The patch titled
     Subject: mm/hugetlb.c: just use put_page_testzero() instead of page_count()
has been removed from the -mm tree.  Its filename was
     mm-hugetlbc-just-use-put_page_testzero-instead-of-page_count.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From: Hui Su <sh_def@163.com>
Subject: mm/hugetlb.c: just use put_page_testzero() instead of page_count()

We test the page reference count is zero or not here, it can be a bug here
if page refercence count is not zero.  So we can just use
put_page_testzero() instead of page_count().

Link: https://lkml.kernel.org/r/20201007170949.GA6416@rlk
Signed-off-by: Hui Su <sh_def@163.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/hugetlb.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/mm/hugetlb.c~mm-hugetlbc-just-use-put_page_testzero-instead-of-page_count
+++ a/mm/hugetlb.c
@@ -2014,8 +2014,7 @@ retry:
 		 * This page is now managed by the hugetlb allocator and has
 		 * no users -- drop the buddy allocator's reference.
 		 */
-		put_page_testzero(page);
-		VM_BUG_ON_PAGE(page_count(page), page);
+		VM_BUG_ON_PAGE(!put_page_testzero(page), page);
 		enqueue_huge_page(h, page);
 	}
 free:
_

Patches currently in -mm which might be from sh_def@163.com are

fs-proc-make-pde_get-return-nothing.patch
acctc-use-elif-instead-of-end-and-elif.patch
mm-memcontrol-rewrite-mem_cgroup_page_lruvec.patch